-
Notifications
You must be signed in to change notification settings - Fork 43
/
ChAP.py
545 lines (493 loc) · 14.8 KB
/
ChAP.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
#! /usr/bin/env python
"""
Script that tries to select the EMV Payment Systems Directory on all inserted cards.
Copyright 2008 RFIDIOt
Author: Adam Laurie, mailto:adam@algroup.co.uk
http://rfidiot.org/ChAP.py
This file is based on an example program from scard-python.
Originally Copyright 2001-2007 gemalto
Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
scard-python is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
scard-python is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with scard-python; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""
from smartcard.CardType import AnyCardType
from smartcard.CardRequest import CardRequest
from smartcard.CardConnection import CardConnection
from smartcard.CardConnectionObserver import ConsoleCardConnectionObserver
from smartcard.Exceptions import CardRequestTimeoutException
import getopt
import sys
# default global options
BruteforcePrimitives= False
BruteforceAID= False
BruteforceEMV= False
Debug= False
Protocol= CardConnection.T0_protocol
RawOutput= False
Verbose= False
# known AIDs
# please mail new AIDs to aid@rfidiot.org
KNOWN_AIDS= [
['VISA',0xa0,0x00,0x00,0x00,0x03],
['VISA Debit/Credit',0xa0,0x00,0x00,0x00,0x03,0x10,0x10],
['VISA Credit',0xa0,0x00,0x00,0x00,0x03,0x10,0x10,0x01],
['VISA Debit',0xa0,0x00,0x00,0x00,0x03,0x10,0x10,0x02],
['VISA Electron',0xa0,0x00,0x00,0x00,0x03,0x20,0x10],
['VISA Interlink',0xa0,0x00,0x00,0x00,0x03,0x30,0x10],
['VISA Plus',0xa0,0x00,0x00,0x00,0x03,0x80,0x10],
['VISA ATM',0xa0,0x00,0x00,0x00,0x03,0x99,0x99,0x10],
['MASTERCARD',0xa0,0x00,0x00,0x00,0x04,0x10,0x10],
['Maestro',0xa0,0x00,0x00,0x00,0x04,0x30,0x60],
['Maestro UK',0xa0,0x00,0x00,0x00,0x05,0x00,0x01],
['Maestro TEST',0xb0,0x12,0x34,0x56,0x78],
['Self Service',0xa0,0x00,0x00,0x00,0x24,0x01],
['American Express',0xa0,0x00,0x00,0x00,0x25],
['ExpressPay',0xa0,0x00,0x00,0x00,0x25,0x01,0x07,0x01],
['Link',0xa0,0x00,0x00,0x00,0x29,0x10,0x10],
['Alias AID',0xa0,0x00,0x00,0x00,0x29,0x10,0x10],
]
# define the apdus used in this script
GET_RESPONSE = [0x00, 0xC0, 0x00, 0x00 ]
SELECT = [0x00, 0xA4, 0x04, 0x00]
DF_PSE = [0x31, 0x50, 0x41, 0x59, 0x2E, 0x53, 0x59, 0x53, 0x2E, 0x44, 0x44, 0x46, 0x30, 0x31]
READ_RECORD = [0x00, 0xb2]
GET_DATA = [0x80, 0xca]
UNBLOCK_PIN= [0x84,0x24,0x00,0x00,0x00]
#BRUTE_AID= [0xa0,0x00,0x00,0x00]
BRUTE_AID= []
# define tags for response
BINARY= 0
TEXT= 1
BER_TLV= 2
NUMERIC= 3
MIXED= 4
TEMPLATE= 0
ITEM= 1
SFI= 0x88
TAGS= {
0x4f:['Application Identifier (AID)',BINARY,ITEM],
0x50:['Application Label',TEXT,ITEM],
0x57:['Track 2 Equivalent Data',BINARY,ITEM],
0x5a:['Application Primary Account Number (PAN)',NUMERIC,ITEM],
0x6f:['File Control Information (FCI) Template',BINARY,TEMPLATE],
0x70:['Record Template',BINARY,TEMPLATE],
0x82:['Application Interchange Profile',BINARY,ITEM],
0x84:['DF Name',MIXED,ITEM],
0x87:['Application Priority Indicator',BINARY,ITEM],
0x88:['Short File Identifier',BINARY,ITEM],
0x8c:['Card Risk Management Data Object List 1 (CDOL1)',BINARY,ITEM],
0x8d:['Card Risk Management Data Object List 2 (CDOL2)',BINARY,ITEM],
0x8e:['Cardholder Verification Method (CVM) List',BINARY,ITEM],
0x8f:['Certification Authority Public Key Index',BINARY,ITEM],
0x94:['Application File Locator',BINARY,ITEM],
0xa5:['Proprietary Information',BINARY,TEMPLATE],
0x5f20:['Cardholder Name',TEXT,ITEM],
0x5f24:['Application Expiration Date YYMMDD',NUMERIC,ITEM],
0x5f25:['Application Effective Date YYMMDD',NUMERIC,ITEM],
0x5f28:['Issuer Country Code',NUMERIC,ITEM],
0x5f2d:['Language Preference',TEXT,ITEM],
0x5f30:['Service Code',NUMERIC,ITEM],
0x5f34:['Application Primary Account Number (PAN) Sequence Number',NUMERIC,ITEM],
0x5f50:['Issuer URL',TEXT,ITEM],
0x9f05:['Application Discretionary Data',BINARY,ITEM],
0x9f07:['Application Usage Control',BINARY,ITEM],
0x9f08:['Application Version Number',BINARY,ITEM],
0x9f0d:['Issuer Action Code - Default',BINARY,ITEM],
0x9f0e:['Issuer Action Code - Denial',BINARY,ITEM],
0x9f0f:['Issuer Action Code - Online',BINARY,ITEM],
0x9f11:['Issuer Code Table Index',BINARY,ITEM],
0x9f12:['Application Preferred Name',TEXT,ITEM],
0x9f1f:['Track 1 Discretionary Data',TEXT,ITEM],
0x9f20:['Track 2 Discretionary Data',TEXT,ITEM],
0x9f26:['Application Cryptogram',BINARY,ITEM],
0x9f42:['Application Currency Code',NUMERIC,ITEM],
0x9f44:['Application Currency Exponent',NUMERIC,ITEM],
0x9f4a:['Static Data Authentication Tag List',BINARY,ITEM],
0xbf0c:['File Control Information (FCI) Issuer Discretionary Data',BINARY,TEMPLATE],
}
# define BER-TLV tags
TLV_CLASS_MASK= 0xc0
TLV_DATA_MASK= 0x20
TLV_TAG_MASK= 0x1f
TLV_CLASS_TAGS= {
0x00:'Universal class',
0x40:'Application class',
0x80:'Context-specific class',
0xc0:'Private class',
}
TLV_DATA_TAGS= {
0x00:'Primitive data object',
0x01:'Constructed data object',
}
# define SW1 return values
SW1_RESPONSE_BYTES= 0x61
SW1_WRONG_LENGTH= 0x6c
SW12_OK= [0x90,0x00]
SW12_NOT_FOUND= [0x6a,0x82]
# define GET_DATA primitive tags
PIN_TRY_COUNTER= [0x9f,0x17]
ATC= [0x9f,0x36]
LAST_ATC= [0x9f,0x13]
LOG_FORMAT= [0x9f, 0x4f]
def printhelp():
print '\nOptions:\n'
print '\t-a\t\tBruteforce AIDs'
print '\t-A\t\tPrint list of known AIDs'
print '\t-d\t\tDebug - Show PC/SC APDU data'
print '\t-e\t\tBruteforce EMV AIDs'
print '\t-h\t\tPrint detailed help message'
print '\t-p\t\tBruteforce primitives and files'
print '\t-r\t\tRaw output - do not interpret EMV data'
print '\t-t\t\tUse T1 protocol (default is T0)'
print '\t-v\t\tVerbose on'
print
def hexprint(data):
index= 0
while index < len(data):
print '%02x' % data[index],
index += 1
print
def get_tag(data,req):
"return a tag's data if present"
index= 0
# walk the tag chain to ensure no false positives
while index < len(data):
try:
# try 1-byte tags
tag= data[index]
TAGS[tag]
taglen= 1
except:
try:
# try 2-byte tags
tag= data[index] * 256 + data[index+1]
TAGS[tag]
taglen= 2
except:
# tag not found
index += 1
continue
if tag == req:
itemlength= data[index + taglen]
index += taglen + 1
return True, itemlength, data[index:index + itemlength]
else:
index += taglen + 1
return False,0,''
def isbinary(data):
index= 0
while index < len(data):
if data[index] < 0x20 or data[index] > 0x7e:
return True
index += 1
return False
def decode_pse(data):
"decode the main PSE select response"
index= 0
indent= ''
if RawOutput:
hexprint(data)
textprint(data)
return
while index < len(data):
try:
tag= data[index]
TAGS[tag]
taglen= 1
except:
try:
tag= data[index] * 256 + data[index+1]
TAGS[tag]
taglen= 2
except:
print indent + ' Unrecognised TAG:',
hexprint(data[index:])
return
print indent + ' %0x:' % tag, TAGS[tag][0],
itemlength= data[index + taglen]
print '(%d bytes):' % itemlength,
offset= 1
out= ''
mixedout= []
while itemlength > 0:
if TAGS[tag][1] == BINARY:
if TAGS[tag][2] != TEMPLATE or Verbose:
print '%02x' % data[index + taglen + offset],
else:
if TAGS[tag][1] == NUMERIC:
out += '%02x' % data[index + taglen + offset]
else:
if TAGS[tag][1] == TEXT:
out += "%c" % data[index + taglen + offset]
if TAGS[tag][1] == MIXED:
mixedout.append(data[index + taglen + offset])
itemlength -= 1
offset += 1
if TAGS[tag][1] == MIXED:
if isbinary(mixedout):
hexprint(mixedout)
else:
textprint(mixedout)
if TAGS[tag][1] == BINARY:
print
if TAGS[tag][1] == TEXT or TAGS[tag][1] == NUMERIC:
print out
if TAGS[tag][2] == ITEM:
index += data[index + taglen] + taglen + 1
else:
index += taglen + 1
indent += ' '
def textprint(data):
index= 0
out= ''
while index < len(data):
if data[index] >= 0x20 and data[index] < 0x7f:
out += chr(data[index])
else:
out += '.'
index += 1
print out
def bruteforce_primitives():
for x in range(256):
for y in range(256):
status, length, response= get_primitive([x,y])
if status:
print 'Primitive %02x%02x: ' % (x,y)
if response:
hexprint(response)
textprint(response)
def get_primitive(tag):
# get primitive data object - return status, length, data
le= 0x00
apdu = GET_DATA + tag + [le]
response, sw1, sw2 = send_apdu(apdu)
if response[0:2] == tag:
length= response[2]
return True, length, response[3:]
else:
return False, 0, ''
def check_return(sw1,sw2):
if [sw1,sw2] == SW12_OK:
return True
return False
def send_apdu(apdu):
# send apdu and get additional data if required
response, sw1, sw2 = cardservice.connection.transmit( apdu, Protocol )
if sw1 == SW1_WRONG_LENGTH:
# command used wrong length. retry with correct length.
apdu= apdu[:len(apdu) - 1] + [sw2]
return send_apdu(apdu)
if sw1 == SW1_RESPONSE_BYTES:
# response bytes available.
apdu = GET_RESPONSE + [sw2]
response, sw1, sw2 = cardservice.connection.transmit( apdu, Protocol )
return response, sw1, sw2
def select_aid(aid):
# select an AID and return True/False plus additional data
apdu = SELECT + [len(aid)] + aid + [0x00]
response, sw1, sw2= send_apdu(apdu)
if check_return(sw1,sw2):
if Verbose:
decode_pse(response)
return True, response, sw1, sw2
else:
return False, [], sw1,sw2
def bruteforce_aids(aid):
#brute force two digits of AID
print 'Bruteforcing AIDs'
y= z= 0
if BruteforceEMV:
brute_range= [0xa0]
else:
brute_range= range(256)
for x in brute_range:
for y in range(256):
for z in range(256):
#aidb= aid + [x]
aidb= [x,y,0x00,0x00,z]
if Verbose:
print '\r %02x %02x %02x %02x %02x' % (x,y,0x00,0x00,z),
status, response, sw1, sw2= select_aid(aidb)
if [sw1,sw2] != SW12_NOT_FOUND:
print '\r Found AID:',
hexprint(aidb)
if status:
decode_pse(response)
else:
print 'SW1 SW2: %02x %02x' % (sw1,sw2)
def dump_aid(aid):
# now try and brute force records
print ' Checking for records:'
for y in range(1,31):
for x in range(1,256):
p1= x
p2= (y << 3) + 4
le= 0x00
apdu= READ_RECORD + [p1] + [p2,le]
response, sw1, sw2= send_apdu(apdu)
if check_return(sw1,sw2):
print " Record %02x, File %02x: length %d" % (x,y,len(response))
if Verbose:
hexprint(response)
textprint(response)
decode_pse(response)
else:
if not BruteforcePrimitives:
return
# main loop
aidlist= KNOWN_AIDS
try:
# 'args' will be set to remaining arguments (if any)
opts, args = getopt.getopt(sys.argv[1:],'aAdeprtv')
for o, a in opts:
if o == '-a':
BruteforceAID= True
if o == '-A':
print
for x in range(len(aidlist)):
print '% 20s: ' % aidlist[x][0],
hexprint(aidlist[x][1:])
print
sys.exit(False)
if o == '-d':
Debug= True
if o == '-e':
BruteforceAID= True
BruteforceEMV= True
if o == '-p':
BruteforcePrimitives= True
if o == '-r':
RawOutput= True
if o == '-t':
Protocol= CardConnection.T1_protocol
if o == '-v':
Verbose= True
except getopt.GetoptError:
# -h will also cause an exception as it doesn't exist!
printhelp()
sys.exit(False)
try:
# request any card type
cardtype = AnyCardType()
# request card insertion
print 'insert a card within 10s'
cardrequest = CardRequest( timeout=10, cardType=cardtype )
cardservice = cardrequest.waitforcard()
# attach the console tracer
if Debug:
observer=ConsoleCardConnectionObserver()
cardservice.connection.addObserver( observer )
# connect to the card
cardservice.connection.connect(Protocol)
# try to select PSE
apdu = SELECT + [len(DF_PSE)] + DF_PSE
response, sw1, sw2 = send_apdu( apdu )
if check_return(sw1,sw2):
# there is a PSE
print 'PSE found!'
decode_pse(response)
if BruteforcePrimitives:
# brute force primitives
print 'Brute forcing primitives'
bruteforce_primitives()
status, length, psd= get_tag(response,SFI)
if not status:
print 'No PSD found!'
else:
print ' Checking for records:',
if BruteforcePrimitives:
psd= range(31)
print '(bruteforce all files)'
else:
print
for x in range(256):
for y in psd:
p1= x
p2= (y << 3) + 4
le= 0x00
apdu= READ_RECORD + [p1] + [p2,le]
response, sw1, sw2 = cardservice.connection.transmit( apdu )
if sw1 == 0x6c:
print " Record %02x, File %02x: length %d" % (x,y,sw2)
le= sw2
apdu= READ_RECORD + [p1] + [p2,le]
response, sw1, sw2 = cardservice.connection.transmit( apdu )
print " ",
aid= ''
if Verbose:
hexprint(response)
textprint(response)
i= 0
while i < len(response):
# extract the AID
if response[i] == 0x4f and aid == '':
aidlen= response[i + 1]
aid= response[i + 2:i + 2 + aidlen]
i += 1
print ' AID found:',
hexprint(aid)
aidlist.append(['PSD Entry']+aid)
if BruteforceAID:
bruteforce_aids(BRUTE_AID)
if aidlist:
# now try dumping the AID records
current= 0
while current < len(aidlist):
if Verbose:
print 'Trying AID: %s -' % aidlist[current][0],
hexprint(aidlist[current][1:])
selected, response, sw1, sw2= select_aid(aidlist[current][1:])
if selected:
if Verbose:
print ' Selected: ',
hexprint(response)
textprint(response)
else:
print ' Found AID: %s -' % aidlist[current][0],
hexprint(aidlist[current][1:])
decode_pse(response)
if BruteforcePrimitives:
# brute force primitives
print 'Brute forcing primitives'
bruteforce_primitives()
ret, length, pins= get_primitive(PIN_TRY_COUNTER)
if ret:
print ' PIN tries left:', pins[0]
if pins == 0:
print 'unblocking PIN'
ret, sw1, sw2= send_apdu(UNBLOCK_PIN)
hexprint([sw1,sw2])
ret, length, atc= get_primitive(ATC)
if ret:
atcval= (atc[0] << 8) + atc[1]
print ' Application Transaction Counter:', atcval
ret, length, latc= get_primitive(LAST_ATC)
if ret:
latcval= (latc[0] << 8) + latc[1]
print ' Last ATC:', latcval
ret, length, logf= get_primitive(LOG_FORMAT)
if ret:
print 'Log Format: ',
hexprint(logf)
dump_aid(aidlist[current][1:])
current += 1
else:
if Verbose:
print ' Not found: %02x %02x' % (sw1,sw2)
current += 1
else:
print 'no PSE: %02x %02x' % (sw1,sw2)
except CardRequestTimeoutException:
print 'time-out: no card inserted during last 10s'
if 'win32'==sys.platform:
print 'press Enter to continue'
sys.stdin.read(1)